[Elecraft] laptop power supply to power KX3

[Bill Tubbs]

After sending my note about using the little MFJ power supply at 2.89 amps, I realized that it works fine on my FT-817D at 5 watts but would obviously be taxed at the full 12 watts of the KX3. So fuggetabowdit. 

Now I'M looking for a sufficient supply for the KX3 ;-)

Bill
WK6A

Sent from my iPhone

On Sep 18, 2012, at 4:44 AM, Johnny <vr2xmc at yahoo.com.hk> wrote:

> Yes , correct , laptop supplies are often RF noisy.
> 
> Sent from my  iPhone 4
> 
> "Fred Townsend" <ftownsend at sbcglobal.net> 於 2012年9月18日 下午2:04 寫道：
> 
>> Jeff, caution.  Laptop power external supplies are designed to be followed
>> by precision internal regulators that handle the logic voltages and charging
>> the battery. The external supplies are not well regulated and can be quite
>> noisy.  They may not be the best supplies for ham rigs.
>> 73
>> Fred, AE6QL
>> 
>> -----Original Message-----
>> From: elecraft-bounces at mailman.qth.net
>> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Jeff Herr
>> Sent: Monday, September 17, 2012 6:40 PM
>> To: 'Elecraft Reflector'
>> Subject: [Elecraft] laptop power supply to power KX3
>> 
>> While at work I went through our stock of power supplies for the various
>> makes of laptops we use.
>> I found that Toshiba supplies are specified 15v and ranged in current
>> capability from 2.5 amps and up.
>> 
>> Dell, Lenovo, HP, Acer, Asus all use 19v supplies.
>> 
>> Those Toshiba supplies are very small.
>> 
>> WW6L
>> 
>> 
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft at mailman.qth.net
>> 
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> 
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft at mailman.qth.net
>> 
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html